Upgrade banner should be closeable

[silverweed]

Hello,

every time I start Visual Studio (both 2017 and 2019), this banner shows up (and apparently automatically opens the Code Search window):

It's nice to be notified when a new upgrade is available, but I may not want to download it right away, and the banner is pretty annoying and distracting. Why isn't there an option to close it? (maybe to postpone it to the next time VS is opened)

I also looked in the tool options and I found no settings to disable the banner.

So I think VS Chromium's behavior could be improved by these 2 additions:

1. make the banner closeable (put a little 'X' at the end of the line or something); make it show up the next time VS is booted;
2. add an option to never check for updates so the banner doesn't ever show up if a user is just not interested in updating it. Maybe override this setting only if it's a critical security update.